Week 15

1.  When the Earth is seen from outer space, it looks mainly blue. This is because most of the Earth is covered with —

• Ice

• Mountains

• Oceans

• Deserts

2. The main difference between ocean water and lake water is that ocean water contains —

• Oxygen

• Salt

• Algae

• Plants

3. Which set of pictures shows what happens to a glass of saltwater when it is left out on a counter for several weeks?

• C → D → A → B

• A → C → B → D

• B → A → C → D

• D → B → A → C

Tags

NGSS.MS-PS1-2

4. Algae is a simple plant type in the ocean that provides much of Earth’s —

• Oxygen

• Hydrogen

• Nitrogen

• Carbon Dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

5. The simple instrument shown is used to measure —

• Air pressure

• Wind speed

• Temperature

• Precipitation

Rain, Snow, Sleet

6. Which weather term best describes the words above?

• Humidity

• Atmosphere

• Precipitation

• Barometric Pressure

Tags

NGSS.MS-ESS2-4

7. Which tools would be needed to measure the size and the mass of a block of wood?

• A watch with a second hand and a ruler

• A graduated cylinder and a thermometer

• A ruler and a balance

• A thermometer and a meter stick

8.  Many electrical wires are wrapped with a plastic coating because copper is —

• Less expensive than steel

• A good conductor

• Able to keep its shape

• A good insulator

9. People put sugar in their tea to make it sweet. The sugar will dissolve fastest when the tea —

• Is hot

• Is cold

• Is in a tall glass

• Has lemon in it

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

10.  Each of these simple machines contains a —

• Wheel and axle

• Lever

• Pulley

• Wedge